Punch



V. BARTON PUNCH Fil'ed March 25. 1923 2 Sheets-Sheet 1 "Hum w i if I /f )g/ 0 INVENTOR.

Vilwen Bark;

TTORNE Y.

Patented Apr. 22, 1924.

Unused rammars? evinonn'r nan'roivgorv WICKERSHAM, wAsnrnor'ron; 1

rnivcrr.

Application filed March a, 192a Serial no. e27,2o1. I

To all whom it may concern:

Be it known that I, VINCENT BARTON, a citizen of the United States, residing at Wickersham, in the county of Whatcom and State of Washington, have invented certain new and useful Improvements in Punches, of which the following is a specification.

This invention relates to punch devices adapted to form holes in metal bodies such as straps, plates and the like, and has for one of its objects to simplify and improve the construction and increase the eificiency and utility of devices of this character.

Another object of the invention is to provide a device of this character including a yieldably supported punch member having means whereby the yieldable supporting means may be held in compressed position while the parts are being assembled.

With these and other objects in view the invention consists in certain novel features partly in seci a modification of the construction.

The improved device comprises a body or stock formed with lower or base portion for supporting the die, and upper or punch carrying portion 11, the upper face of the portion 10 and lower face of the punoh carrying portion 11 being in spaced relation as shown. 1

The body may be formed open at'the fron and rear and at one side, as shown in Figures 1 and 2, or open at the front and rear only and closed at both ends, as shown in Figure 4.

Formed within the upper portion 11 of the body is' arecess or cavity 12 communicating with the upper face of the portion 11 by a guideway 13, and laterally enlarged at the lower end to form an annular seat 14 to receive an annular stop member 15, the latter held in place by clamp screws 16. The bore of the stop member 15 corresponds to the guideway 13 and the bore of. the member 15.

size or capacity to receive any required size.

An outwardly directed stop flange 18 is car-. l

ried by the punch--17 and bears normally against theupper end of the recess 12, as shown; a I

At its lower end'the punch 17 isreduced as shown at 19 and constitutes the metal penetrating portion, the lower end of the portion 19 being preferablyprovided with a centering point 20.

A spring 21 surrounds-the body of the V punch 17 within the recess 12 and bears against the stops 15 and 18, and thus exerts its force to maintain the punch normally in is provided with a relatively large opening is a die member 23 having a portion of its outer periphery tapered and-a portion cylindrical to correspondto thetapered and cylindrical part of the opening 13, as shownin Figures 1, 3 and 4. v

The portion 10 of the body is formed with an upwardly extending rib 24 having a plurality of threaded apertures to receive clamp screws 25 engaging the cylindical portion of the die and thus holding it in position.

The die 23 is provided with an opening 23" corresponding to the portion 19 of the punch, andconnected with a downward1y diverging or tapered portion .25, to-insure the free discharge ofthe fillets punched out at each operation of thedevice. or

A stripping member 27 is disposed tween the body portions 10 and 11 and slotted to permit the'punch to pass. The

.member 28 is formed'withan upstanding portion 28 slotted as shown at 29 to receive Z a holding screw 30, the slot permitting the stripper to be adjusted to-correspond tothe thickness of the object to be-punched.

Tapped through one of the sides of the. portion llfof the bodyis a stop screw 3l adapted to be inserted at its inner end into.

be i

the path of the spring'21 and hold the latter 7 ofpunch. I The preferred embodiment of the inven tion isv disclosed in the drawings and set forth in-the specification, but it Will be understood that modifications within'the scope of the claimed invention may be made in the construction Without departing from the principle of the invention or sacrificing any with the recess, a punch operating through the guideways and having a stop flange goperating in the recess, a spring Within the recess and bearing against the stop flange,

and a threaded'pin operating through the body and adapted to be projected into the path of the spring to hold the same compressed While the punch is being installed. 7 In testimony whereof, I alfix my signature hereto. Y 4 7 [VINCENT BARTON. 

